Cotton-gin



(No Model.) 2 Sheets-Sheet 1.

' P. L. & W. BRADY.

COTTON GIN.

No. 393,352. Patented Nov. 27, 1888..

(No Model.) I 2 Sheets-Sheet 2.

P. L. & W. BRADY.

' COTTON GIN.

No. 393,352. Patented Nov. 27, 1888.

Qmmmw,

UNITED STATES PATENT Grinch.

PETER LEWIS BRADY AND \VILLIAM BRADY, OE HEARNE, TEXAS.

COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 393,352, dated November 27, 1888.

Application filed March 31. 1887. Serial No. 233,105. (No model.)

To all whom, it may concern:

Be it known that we, PETER LEWIS BRADY and WILLIAM BRADY, citizens of the United States, residing at Hearne, in the county of Robertson and State of Texas, have invented a new and useful Improvement in Cotton- Gins, of which the followingisa specification.

Our invention relates to an improvemcntin cotton-gins; and it consists in the peculiar construction and combination of devices that will he more fully set forth hereinafter, and particularly pointed outin the claims.

In the drawings, Figure 1 is a side elevation of a cotton gin embodying our improvements. Fig. 2 is a front elevation of the same. Fig. 3 is a vertical longitudinal sectional view of the same.

A represents the sides of the cotton-gin,and B represents ground-sills, which connect the sides A and support the same at a slight distance above the ground. In the opposing sides of the walls A,at the centers thereofiare made circular countersunk openings 0, in which are fitted revolving heads or plates D, which are also circular in shape, and arejournaled upon bearingstuds E, which extend through the side walls A.

F represents a saw-cylinder, which has spindlesjonrnaled in openings in the end walls A.

.the said saw-cylinder being arranged in front of therevolving-plates D. This saw-cylinder is provided with the usual gin-saws, G.

H represents a roller, which is arranged above the saw-cylinder and in proximity thereto, and has its spindles bearing in openings made in the end walls A. This roller is provided with a series of annular grooves, I,int0

which the serrated edges of the saws extend.

K represents a roller, which is similar in construction to the roller H, and is arranged under the saw-cylinder in proximity thereto, and is likewise provided with a series of an nular grooves to receivcthe lower edges of the gin-saws.

an upwardly-inclined slot, M, the said slots being arranged tangentially with relation to the centers of the plates D, and in the said slots are secured a pair of movable blocl s,N. In the said blocks are journaled the projecting spindles of a roller, 0.

1? represents elevatingscrews, which pass through threaded openings in the upper edges of the end walls A. The lower ends of the said screws are swivelcd to the blocks N.- By turning the said screws in one direction the roller 0 may be raised in the slots, and by turning the screws in the contrary direction the said roller will be lowered.

R represents a roller, which is jonrnaled above the rollers O and H and between the same, but nearer the roller 0. This roller R is provided with longitudinal corrugations.

S represents a hopper arranged above the rollers H and R. The opening in the lower side of the hopper communicates with the space between the rollers H and R.

T represents a roller, which isjournaled in the end walls A and extends across the hopper, and is arranged at a suitable distance from the rear side thereof. This roller is provided with projecting teeth or arms T-.

Immediately in front of the saw-roller is journaled a roller, U, provided with a radial series of brushes, V, which are adapted to strike against the saw to remove the cotton fiber from the teeth thereof to prevent clogging of the same.

The projecting spindle of the sawcylinder is provided with a spur wheel, \V, which meshes with an idle-pinion, X, which latter meshes with a pinion, X, on the spindle of the roller H. The spur-wheel W also meshes with an idle-pinion, Y, which in turn meshes with the pinion Y on the spindle of the roller K.

The brushcylinder is provided with a pinion, Z, which meshes with the spur-wheel TV.

A pulley, A, is attached to the spindle of the saw-cylinder and serves to connect the lat ter to a steam-engine or other motor by means of an endless belt.

Each of the rollers L and the roller 0 are provided at one end with a spur-wheel B and the roller R with a pinion, It. Midway between the said spnnwheels are journaled pinions 0, which are all of the same size and tated in the contrary direction, and the rollers H, K, L, O, R, and T will be rotated in the same direction.

It will be understood that the system of gearwheels and idle-pinions described as arranged on one side of the machine is duplicated on the opposite side, as shown in Fig. 2.

The operation of our invention is as follows: The cotton to be ginned is fed into the hopper and is stirred therein andprevented frombecoming lodged in the hopper by the rotati ng toothed roller '1. The corrugated roller R catches the cotton at the bottom of the hopper and forces the same downward into the cylindrical space surrounded by the rollers L, O, R, H, and K and saw-cylinder F, and the mass of cotton in the said cylindrical space is kept in constant rotation by means of the said rotating rollers. This continuously causes new surfaces of the cotton to be presented to the giusaws, and the latter draw the cotton through the annular grooves in the roller H, and thus separate it from the seeds.

It will be observed that the shouldered spaces in the roller H, between the annular grooves thereof, serve the purpose of the ribs usually employed in cottougins. As the said roller is in constant rotation when the machine is in operation, it serves to aid the ginsaws in drawing the cotton fibers from the cottonseeds, and thus greatly facilitates the operation of ginning the cotton. The roller K, which is also grooved, serves to feed the cotton to the gin-saws, as it rotates in the same direction therewith. This rotary motion of the rollers H and K also effectually prevents the cotton from choking in their annular grooves and on the edges of the saw. This prevents the saws from cutting the fibers of the cotton, and thus causes the said fibers to be drawn from the cotton'seeds without being out, as before described, thus producing lintcotton of superior quality.

The brushes on the rotating roller U serve as doffers to pull the ginned cotton from the gin-saws and deliver it to the condensing-rollers, which are not here shown, as they form no part of our invention.

It will be observed that spaces are left be tween the rollers L. XVhile the cotton is being rotated by the said rollers before being presented to the gin-saws the dust, grit, and other foreign substances in the cotton become dislodged therefrom and fall through the spaces between the rollers L, thus causing the machine to clean the cotton before ginning it, and thereby aid the machine in producing a manufactured staple of superior excellence.

By turning the screws P so as to raise the roller 0 access may be obtained to the interior of the cylindrical space formed between the rollers.

The rotating circular disks or plates D on the inner sides of the walls A prevent the ends of the roll of cotton in the cylindrical space from abrading against the end walls, thus reducing the friction and consequently aiding the operation of the machine. By frictional contact between the ends of the roll of cotton and the circular plates D the latter are rotated as the cotton is turned to the action of the saws, as will be readily understood.

An advantage gained by keeping the roll of 8 5 cotton in constant rotation while being ginned is that the cotton cannot choke the gin, no matter whether a large or a small quantity is fed thereto.

If preferred, two or more saw-cylinders may 90 be employed in the gin and the saw-teeth may be discarded and pickers or hooks adapted to catch in the fibers of the cotton employed instead.

Having thus described our invention, we 5 claim- 1. In a cotton gin, the combination of the frame, the saw-cylinder, the grooved rollers H K, arranged, respectively, above and below the saw cylinder, the saws of the latter entering the grooves of the said rollers, and the series of rollers L O B, said rollers and the saw -cylinder and grooved rollers being ar ranged in the form of ahollow cylinder, and all geared to the saw-cylinder and rotating in the same direction, substantially as described.

2. The combination of the frame having the hopper, the saw-cylinder, the grooved rollers H K, respectively, above and below the sawcylinder, the rollers L 0 It, the last being i re fluted and arranged at the discharge end of the hopper, all of the rollers and the saw-cylinder being arranged to form a hollow cylinder and geared to the saw-cylinder and rotating in the shine direction, substantially as described.

3. In a cottou-gin, the combination of the frame having the hopper, the saw-cylinder, means, substantially as described, to operate the same, the series of rollers arranged in the form of a hollow cylinder and geared to and rotating in the same direction as the sawcylinder, the toothed roller T,'arranged in the hopper above the said series of rollers, and means, substantially as specified, to rotate said toothed roller.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.

PETER LEWIS BRADY. \VILLIAM BRADY.

Witnesses:

H. PARNALL, H. T. WARD. 

